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Although the pyramid was discovered in 1920 by archaeologist Manuel Gamio, the first investigations at Cuicuilco were carried out by Byron Cumming, between 1923 and 1924, which led to the discovery of the civic core of the site and the main pyramid. In 1968, during the construction work for a swimming pool for the Olympics, other smaller, rectangular pyramids were discovered.

Although the pyramid was discovered in 1920 by archaeologist Manuel Gamio, the first investigations at Cuicuilco were carried out by Byron Cumming, between 1923 and 1924, which led to the discovery of the civic core of the site and the main pyramid. In 1968, during the construction work for a swimming pool for the Olympics, other smaller, rectangular pyramids were discovered.